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Recursion Unlocked

CS Concepts Made Simple, #1

by M.Aarohi ...

Series Book 1 - CS Concepts Made Simple
Recursion scares people before they even understand it. Recursion Unlocked breaks it down with plain-English stories, visual diagrams, and real code — no intimidating math. You'll learn what recursion actually is, how to trace a recursive call step by step, the difference between recursion and iteration, classic problems (factorial, Fibonacci, tree traversal) explained visually, common mistakes ... Read more

$9.00 USD or Free with Kobo Plus

Recursion scares people before they even understand it. Recursion Unlocked breaks it down with plain-English stories, visual diagrams, and real code — no intimidating math. You'll learn what recursion actually is, how to trace a recursive call step by step, the difference between recursion and iteration, classic problems (factorial, Fibonacci, tree traversal) explained visually, common mistakes
... Read more
Sorting Algorithms: Sort it Out!

CS Concepts Made Simple, #10

by M.Aarohi ...

Series Book 10 - CS Concepts Made Simple
Every app you use sorts something — feeds, search results, leaderboards. This book shows exactly how, walking through bubble, insertion, selection, merge, and quick sort with visual, step-by-step stories instead of dense pseudocode. You'll learn how to compare algorithms by speed and stability, which sort to reach for and when, work through a "Spot the Concept" section, and solve practice problems ... Read more

$10.00 USD or Free with Kobo Plus

Every app you use sorts something — feeds, search results, leaderboards. This book shows exactly how, walking through bubble, insertion, selection, merge, and quick sort with visual, step-by-step stories instead of dense pseudocode. You'll learn how to compare algorithms by speed and stability, which sort to reach for and when, work through a "Spot the Concept" section, and solve practice problems
... Read more
Searching Beyond Binary

CS Concepts Made Simple, #11

by M.Aarohi ...

Series Book 11 - CS Concepts Made Simple
Binary search is just the beginning of how computers find things instantly. This book walks from linear and binary search into hash tables and search trees, using visual stories to show why some lookups are instant and others crawl. You'll learn when each approach actually applies, work through a "Spot the Concept" section connecting it to real systems, and solve practice problems with full ... Read more

$9.00 USD or Free with Kobo Plus

Binary search is just the beginning of how computers find things instantly. This book walks from linear and binary search into hash tables and search trees, using visual stories to show why some lookups are instant and others crawl. You'll learn when each approach actually applies, work through a "Spot the Concept" section connecting it to real systems, and solve practice problems with full
... Read more
OOP: Inheritance & Polymorphism, With Characters

CS Concepts Made Simple, #6

by M.Aarohi ...

Series Book 6 - CS Concepts Made Simple
Object-oriented programming clicks fastest through story, not syntax. This book teaches classes, inheritance, and polymorphism through a cast of characters you'll actually remember — not dry textbook definitions. You'll learn how classes and objects relate, how inheritance builds hierarchies, the real difference between method overriding and overloading, a "Spot the Concept" section, and practice ... Read more

$9.00 USD or Free with Kobo Plus

Object-oriented programming clicks fastest through story, not syntax. This book teaches classes, inheritance, and polymorphism through a cast of characters you'll actually remember — not dry textbook definitions. You'll learn how classes and objects relate, how inheritance builds hierarchies, the real difference between method overriding and overloading, a "Spot the Concept" section, and practice
... Read more
Backtracking

CS Concepts Made Simple, #8

by M.Aarohi ...

Series Book 8 - CS Concepts Made Simple
Backtracking is how computers solve mazes, puzzles, and impossible-looking problems: try a path, and if it fails, undo and try another. This book turns that idea into a visual, story-driven guide through classic problems like N-Queens, Sudoku, and permutations. You'll learn how decision trees work, how and when to prune bad paths early, a "Spot the Concept" section, and practice problems with full ... Read more

$10.00 USD or Free with Kobo Plus

Backtracking is how computers solve mazes, puzzles, and impossible-looking problems: try a path, and if it fails, undo and try another. This book turns that idea into a visual, story-driven guide through classic problems like N-Queens, Sudoku, and permutations. You'll learn how decision trees work, how and when to prune bad paths early, a "Spot the Concept" section, and practice problems with full
... Read more
Divide & Conquer

CS Concepts Made Simple, #9

by M.Aarohi ...

Series Book 9 - CS Concepts Made Simple
Some of the most powerful algorithms in computer science follow one simple idea: split the problem, solve the pieces, combine the results. This book walks through divide and conquer using visual stories and real code — merge sort, quick sort, and binary search all explained the same intuitive way. You'll see how it connects back to recursion, work through a "Spot the Concept" section, and solve ... Read more

$10.00 USD or Free with Kobo Plus

Some of the most powerful algorithms in computer science follow one simple idea: split the problem, solve the pieces, combine the results. This book walks through divide and conquer using visual stories and real code — merge sort, quick sort, and binary search all explained the same intuitive way. You'll see how it connects back to recursion, work through a "Spot the Concept" section, and solve
... Read more
Pointers & Memory, Made Simple

CS Concepts Made Simple, #2

by M.Aarohi ...

Series Book 2 - CS Concepts Made Simple
Where does a variable actually live? Where Does It Live? finally makes pointers and memory click using simple stories, visual diagrams, and real C/C++ code. You'll learn what a pointer really is, how memory is organized (stack vs. heap), pointer arithmetic and dereferencing demystified, common pointer bugs (dangling pointers, memory leaks, segfaults) and how to avoid them, a "Spot the Concept" ... Read more

$7.00 USD or Free with Kobo Plus

Where does a variable actually live? Where Does It Live? finally makes pointers and memory click using simple stories, visual diagrams, and real C/C++ code. You'll learn what a pointer really is, how memory is organized (stack vs. heap), pointer arithmetic and dereferencing demystified, common pointer bugs (dangling pointers, memory leaks, segfaults) and how to avoid them, a "Spot the Concept"
... Read more
Big-O & Time Complexity, Made Simple

CS Concepts Made Simple, #3

by M.Aarohi ...

Series Book 3 - CS Concepts Made Simple
Why does one piece of code fly through a million items while another crawls to a halt? Big-O & Time Complexity, Made Simple shows you why, using stories, visual diagrams, and real code side-by-sides — zero intimidating math. You'll learn what Big-O measures, the difference between O(1), O(log n), O(n), O(n log n), O(n²) and O(2ⁿ) shown visually, how to eyeball the complexity of your own code, ... Read more

$10.00 USD or Free with Kobo Plus

Why does one piece of code fly through a million items while another crawls to a halt? Big-O & Time Complexity, Made Simple shows you why, using stories, visual diagrams, and real code side-by-sides — zero intimidating math. You'll learn what Big-O measures, the difference between O(1), O(log n), O(n), O(n log n), O(n²) and O(2ⁿ) shown visually, how to eyeball the complexity of your own code,
... Read more
Linked Lists, Stacks & Queues in Pictures

CS Concepts Made Simple, #4

by M.Aarohi ...

Series Book 4 - CS Concepts Made Simple
Linked lists, stacks, and queues sound abstract until you see them as what they really are: a chain of train cars, a stack of plates, a line at a shop. This book turns these foundational data structures into visuals you'll never forget. You'll learn how each structure stores and moves data, core operations (push/pop, enqueue/dequeue, traversal) with their real costs, classic interview problems ... Read more

$10.00 USD or Free with Kobo Plus

Linked lists, stacks, and queues sound abstract until you see them as what they really are: a chain of train cars, a stack of plates, a line at a shop. This book turns these foundational data structures into visuals you'll never forget. You'll learn how each structure stores and moves data, core operations (push/pop, enqueue/dequeue, traversal) with their real costs, classic interview problems
... Read more
SQL Joins

CS Concepts Made Simple, #5

by M.Aarohi ...

Series Book 5 - CS Concepts Made Simple
SQL joins trip up even experienced developers under pressure. This book fixes that with visual diagrams and real table examples — restaurants, orders, customers — instead of abstract syntax. You'll learn INNER, LEFT, RIGHT, FULL, and CROSS joins and exactly when to use each, common mistakes (duplicate rows, NULL traps), a "Spot the Concept" section with real business scenarios, and practice ... Read more

$10.00 USD or Free with Kobo Plus

SQL joins trip up even experienced developers under pressure. This book fixes that with visual diagrams and real table examples — restaurants, orders, customers — instead of abstract syntax. You'll learn INNER, LEFT, RIGHT, FULL, and CROSS joins and exactly when to use each, common mistakes (duplicate rows, NULL traps), a "Spot the Concept" section with real business scenarios, and practice
... Read more

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Recommended For You

CS Concepts Made Simple eBook Series

Recursion Unlocked

Sorting Algorithms: Sort it Out!

Searching Beyond Binary

OOP: Inheritance & Polymorphism, With Characters

Backtracking

Divide & Conquer

Pointers & Memory, Made Simple

Big-O & Time Complexity, Made Simple

Linked Lists, Stacks & Queues in Pictures

SQL Joins

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